Work

Theory of magnon motive force in chiral ferromagnets

Year: 2016

Type: article

Abstract: We predict that magnon motive force can lead to temperature dependent, nonlinear chiral damping in both conducting and insulating ferromagnets. We estimate that this damping can significantly influence the motion of skyrmions and domain walls at finite temperatures. We also find that in systems with low Gilbert damping moving chiral magnetic textures and resulting magnon motive forces can induce large spin and energy currents in the transverse direction.

Source: Physical review. B./Physical review. B

DOI: 10.1103/physrevb.94.020405

Authors: Utkan Güngördü, Alexey A. Kovalev

Institution: University of Nebraska–Lincoln

Language: English

Topic: Magnetic properties of thin films

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, U.S. Department of Energy

Awards: MRSEC: Polarization and Spin Phenomena in Nanoferroic Structures (P-SPINS), NON-COLLINEAR MAGNETISM AND DYNAMIC EFFECTS IN DZYALOSHINSKII-MORIYA MAGNETS, Collaborative Research: Statistical Mechanics of Non-local Disordered Models Associated with Quantum LDPC Codes